Mobile OS Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Mobile OS Interview Questions

Questions Answers Views Company eMail

What’s the difference between an “app id” and a “bundle id” and what is each used for?

678

What is a category and when is it used?

651

What are “strong” and “weak” references? Why are they important and how can they be used to help control memory management and avoid memory leaks?

570

What are the limits of accessibility ?

638

Explain the characteristics of ios?

602

Explain place holder constraint

565

Explain differences between foundation and corefoundation

620

What is auto-layout?

678

What is the difference between let and var in swift?

650

What is the difference between atomic and non-atomic properties? Which is the default for synthesized properties? When would you use one over the other?

576

Explain the difference between copy and retain?

720

What is the difference between synchronous & asynchronous task ?

611

Why do you generally create a weak reference when using self in a block?

666

what’s accessibilityhint?

621

What is made up of nserror object?

603

Un-Answered Questions { Mobile OS }

Explain me what is arc? How it works?

595

Is swift easier than python?

686

Suppose I am trying to receive toast notifications in emulator app. I got everything setup but notification does not show up in emulator at all?

687

What is a sticky intent in android?

720

How long will ubuntu 18.04 be supported?

505

how fragment differs from activity?

711

What is meant by activities?

699

What is the difference between 'assign' and 'retain' keyword?

703

How much do swift developers make?

593

What are the steps required in setting up the linkify calls intent?

720

Does installing ubuntu remove windows?

524

What are the control transfer statements in swift?

624

Is it possible to started an application on powerup?

633

Will iphone 7 get ios 13?

574

What are the functions of managed object context?

693

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